Multifunctional safety helmet

ABSTRACT

The present invention relates to a multifunctional safety helmet. To this end, the multifunctional safety helmet comprises an outer cap and an inner cap inserted into the outer cap, wherein the inner cap includes: a first air passage formed forward and rearward across the upper surface thereof; a cooling fan mounted on the center of the first air passage to blow heat, dissipated from a head, upward in order to transfer the heat toward the first air passage; and an air circulation vent formed on the front side of the first air passage to guide some air toward the forehead.

TECHNICAL FIELD

This invention relates to a multifunctional safety helmet, morespecifically to a multifunctional safety helmet that: lowers thetemperature of the head by circulating internal air outward throughmultiple cooling fans mounted on the inner cap to vaporize sweat andabsorb the vaporized heat; blocks the external heat by forming a partialair curtain on the face by guiding the air forward and rearward acrossthe head and toward both ears and exhausts it; increases air circulationby combining a baffle to limit the creation of whirlpool by collisionsof air transferred from multiple cooling fans, and controls the speed ofthe cooling fan, and also blocks the electromagnetic waves from thecircuit board that controls the cooling fan.

BACKGROUND TECHNOLOGY

In general, the use of safety helmets is mandatory in various majorindustrial fields to protect the head of worker safely from any shocksand falls.

The focus of safety helmets was mainly given to the durability dependingon the working conditions, and the safety helmets are usually made ofthin and solid synthetic resins, carbon resins, and etc., but thestructure that allows external air to flow into the closed inside of thesafety helmets are not available, except in expensive safety helmetsequipped with specific functions.

Therefore, the interior portion of the safety helmets used inconstruction sites and work areas of the factory is maintained at atemperature higher than that of the outside air due to lack ofventilation, so the people who wear safety helmets for long time wouldsuffers headache, thus can't focus on the work, and in worst case, theyneed to stop the work, which causes lower productivity due to loweredwork efficiency and economic loss due to delay of construction.

Due to the above problem, the inside of the helmet gets sweated,especially when the outside air temperature is higher in hot summerseason, and sweat flows down toward the face, which blocks the wearer'sfield of sight and interrupt his operations and works. Due to thisreason, there are times when workers do not wear safety helmets, whichin turn causes more severe safety incidents.

Considering the problems described above, a “safety helmet with coolingand heating feature (Utility Model No. 286311)” has been suggestedpreviously, but this kind of traditional safety helmets has thestructure in which a cooling fan is equipped on the outer cap and aradiator combined on the inner cap. Though it could make the inside ofsafety helmets cool in the summer, but the sweat emitted from the headcouldn't be removed effectively.

And, the traditional outer cap and inner cap couldn't be applied toother safety helmets, which required to buy a costly set comprised of anouter cap and an inner cap.

DETAILED DESCRIPTION OF THE INVENTION Technical Problems to be Solved

The first objective of this invention, designed to solve the problem, isto provide a multifunctional safety helmet that lowers the temperatureof head by vaporizing sweat and absorbing the vaporized heat bycirculating internal air through several cooling fans mounted on theinner cap, while blocking external heat by forming air curtain on theface by guiding air forward and rearward across the head and toward bothears and exhaust it.

The second objective of this invention is to provide a multifunctionalsafety helmet that increases air circulation by combining a baffle tolimit the creation of whirlpool by the collision of air transferred frommultiple cooling fans, and to block electromagnetic waves from thecircuit board that controls the speed of the cooling fan.

The third objective of this invention is to provide a multifunctionalsafety helmet that allows to apply the inner cap according to theinvention to the outer caps of existing safety helmet.

Solution to Problem

The first invention, according to the characteristics to achieve theobjective described above, relates to a safety helmet comprised of anouter cap (200) and an inner cap (100) inserted into the outer cap(200), and to this end, the inner cap (100) includes a first air passage(110) formed forward and rearward across the upper surface, a coolingfan (111) installed on the center of the first air passage (110) totransfer heat, dissipated from the head upward to the first air passage(110), and an air circulation vent (113) formed in front of the firstair passage (110) that guides some air toward the forehead and circulateit.

The second invention wherein the inner cap (100) according to the firstinvention can further have several secondary air passages (120) openedto the first air passage (110) leftward and rightward across the uppersurface.

The third invention wherein at least one or more of cooling fans (111)according to the first invention can be installed on the first airpassage (110), and a primary baffle (112) can be placed at the boundaryof the cooling fan to guide the vented air forward and rearward acrossthe first air passage (110) by halving it.

The fourth invention wherein the inner cap (100) according to the firstinvention can further include a circuit board (130) electricallyconnected to the cooling fan (111), a voltage controller (131) thatcontrols the voltage to control the speed of the cooling fan (111), anda noise filter (132) that can block electromagnetic waves from thecircuit board (130).

The fifth invention wherein the circuit board (130) according to thefourth invention further includes a battery cell (133) and a switch(134) that are electrically connected to control the voltage of thevoltage controller (131).

The sixth invention wherein the first air passage (110) according to thefirst invention can further have a secondary baffle (114) formed tocirculate air by guiding some air to the air circulation vent (113), forwhich the secondary baffle (114) can be placed relatively lower than theheight of the first air passage (110) to exhaust some air forwardedthrough the first air passage (110) and to guide some toward theforehead.

Effects of the Invention

The multifunctional safety helmet according to the invention, whereinthe inner cap according to the invention can be easily applied to theouter caps of existing safety helmets with excellent compatibility.

In addition, it helps the wearer to maintain comfortable conditionbecause it can increase air circulation by combining baffles to limitthe creation of whirlpool caused by collisions of air transferred fromthe multiple cooling fans.

And it can also be worn for a longer time, since it can not only controlthe speed of the cooling fan, but also block electromagnetic waves fromthe circuit board that controls the cooling fan.

And, it can not only exhaust sweat by circulating sweat and heat,dissipated from the forehead and the head externally, but also canmaintain comfortable conditions even in hot and humid summer seasons byblocking the external heat, with air curtain formed on the face bydistributing the air forward and rearward across the head and towardboth ears to exhaust it.

BRIEF DESCRIPTION OF FIGURES

FIG. 1 is an exploded perspective view illustrating inner cap and outercap of the multifunctional safety helmet according to the invention,

FIG. 2 is a perspective view that illustrates the inner cap extractedfrom FIG. 1,

FIG. 3 is a sectional view of FIG. 2,

FIG. 4 is a sectional view of the multifunctional safety helmetaccording to the invention.

DESCRIPTION

Below, more detailed description about the multifunctional safety helmetaccording to the invention will be given with reference to the attachedfigures.

FIG. 1 is an exploded perspective view in which the inner cap isseparated from the outer cap of the multifunctional safety helmetaccording to the invention, FIG. 2 is a perspective view thatillustrates the inner cap extracted from FIG. 1, FIG. 3 is a sectionalview of FIG. 2, and FIG. 4 is a sectional view of the multifunctionalsafety helmet according to the invention.

As illustrated in FIG. 1 and FIG. 4, this invention relates to amultifunctional safety helmet that lowers the temperature of the head bycirculating internal air through multiple cooling fans mounted on theinner cap and by exhausting it outward so that sweat can be vaporizedand the vaporized heat can be absorbed, and blocks external heat byforming an air curtain on the face by guiding air toward the front andback of the head and toward both ears to exhaust it outward, andincreases air circulation by combining a baffle to restrict the creationof whirlpool caused by collisions of air transferred from multiplecooling fans, and can not only control the speed of the cooling fans,but also block electromagnetic waves from the circuit board thatcontrols the cooling fan, and allows to apply the inner cap according tothe invention to the outer caps of existing safety helmets.

This kind of multifunctional safety helmet mainly comprises of twoparts, an outer cap (200) and an inner cap (100) inserted into inside ofthe outer cap (200).

Here, the inner cap (100) has the structure in which a first air passage(110) is formed forward and rearward across the upper surface.

In the center of the first air passage (110), a cooling fan (111) can bemounted so that the heat dissipated from the head can be transferredupward to the first air passage (110).

Here, at least one or more cooling fans (111) can be installed on thefirst air passage (110), but in an embodiment of this invention, thesuggested number is 2.

At this time, the primary baffle (112) will be placed at the boundary ofthe cooling fan (111) so that the air transferred through each coolingfan (111) mentioned above can be distributed and guided forward andrearward across the first air passage (110).

The primary baffle (112) described above allows to exhaust air smoothlytoward both sides of the first air passage (110) by limiting thecreation of whirlpool caused by the collisions of air transferred frommultiple cooling fans (111).

In addition, there is an air circulation vent (113) in front of thefirst air passage (110) to exhaust air to forehead. At this time, thefirst air passage (110) can have the secondary baffle (114) to circulateair by guiding some air to the air circulation vent (113).

Here, the secondary baffle (114) is placed relatively lower than thefirst air passage (110) so that some air can be exhausted toward thelower part of the front side of the first air passage (110) and some areguided toward the forehead of the head.

Therefore, some air guided toward the front of the first air passage(110) can be exhausted toward the forehead through the air circulationvent (113) and can lower the temperature of the head by circulating airin a way that the air exhausted toward the forehead vaporizes sweat fromthe forehead and the head, and the vaporized heat is absorbed. Moreover,the air exhausted downward the front of the first air passage (110)forms an air curtain on the front of the head of head.

Meanwhile, the inner cap (100) can further include multiple secondaryair passages (120) opened to the first air passage (110) leftward andrightward across the upper surface, and in an embodiment of thisinvention, the number of suggested secondary air passages (120) is 2.

The secondary air passage (120) described above is opened as a singleset in the left and right side of the inner cap, and guides air up tothe ears on the head through the air guide plate (121) extended at theend of the left and right side of the inner cap (100) to exhaust itoutward.

Thus, when two cooling fans (111) start to work, the air from the insideof the inner cap (100) is distributed forward and rearward across thefirst air passage (110) by means of the primary baffle (112), and someair distributed forward and rearward is distributed toward the left andright side through the secondary air passage (120) to exhaust itoutward.

Therefore, this helmet has an additional effect that can block theexternal heat effectively by exhausting sweat in a way of circulatingthe sweat dissipated from the forehead and the head outward through theair circulation vent (113) and forming an air curtain on the face bydistributing air forward and rearward across the head and toward bothears through the first air passage (110) and the secondary air passage(120) to exhaust it outward.

Meanwhile, the inner cap (100) can further have a circuit board (130)electrically connected to the cooling fan (111), and the circuit board(130) can have a voltage controller (131) that controls the voltage tocontrol the speed of the cooling fan (111) and a noise filter (132) toblock the emission of electromagnetic waves.

And, the circuit board (130) can further include a battery cell (133)and a switch (134) electrically connected to control the voltage of thevoltage controller (131).

In an embodiment according to the invention, a circuit board (130) ismounted on the inner surface of the inner cap (100), but in otherexamples, it can be mounted on the upper surface of the inner cap.

And, it is desirable that the switch (134) is installed at the end ofthe left and right side of the inner cap (100) so that they can beoperated conveniently with hands.

This switch (134) can be configured not only to turn On/Off the coolingfan (111), but also to adjust the fan speed of the cooling fan (111) athigh/middle/low speed by controlling the voltage of the voltagecontroller (131).

The operation of the multifunctional safety helmet according to theinvention shall be described briefly below.

First, if two cooling fans (111) start to work at the same time by meansof a switch (134), the air from the inside of the inner cap will betransferred upward through the cooling fan (111).

Then the air from the inside of the inner cap (100) is, by means of theprimary baffle (112), distributed forward and rearward across the innercap through the first air passage (110) to exhaust it outward.

Some air guided toward the front of the first air passage (110) will beguided toward the air circulation vent (113) by the secondary baffle(114) and will be circulated toward outer of the inner surface throughthe forehead and the crown of the head, and some air will be exhausteddownward front of the first air passage, thus toward the front of thehead.

And some air guided toward the front of the first air passage (110) willbe distributed toward the left and right side of the inner cap (100)through the secondary air passage (120) and exhausted toward both earson the head.

And, the air guided toward the back of the first air passage (110) willbe exhausted to the back of the head.

At this time, some air guided toward the back of the first air passage(110) will be distributed toward the left and right side of the innercap (100) through the secondary air passage and exhausted toward bothears on the head.

Here, because each of the secondary air passages (120) are open to eachother as a set at the left and at the right side of the inner cap, theair can be guided upward to the ears on the head through the air guideplate (121) to exhaust it outward.

Therefore, it allows to maintain comfortable condition even in summerseasons because it can block external heat by forming an air curtain onthe face by circulating the sweat or heat, dissipated from the foreheadand the head, through the air circulation vent (113) and by exhaustingit outward, and by distributing the air forward and rearward across thehead and toward both ears through the first air passage (110) and thesecondary air passage (120) to exhaust it outward.

In an embodiment of this invention, the number of cooling fans suggestedis 2, but in addition to this, it goes without saying that the number ofcooling fan can be 1, 3 arranged in serial at the first air passage in aform of serial arrangement, or 4 arrange in parallel at the center ofthe first air passage.

Though the number of the secondary air passages suggested in thisembodiment according to the invention is 2, it can be 1, 3, or 4.

And, this invention can be implemented to vary the speed of the coolingfans minutely using a dial method in addition to using the switches.

And, this invention can be implemented to circulate air inward andoutward by differentiating the cooling fans according to user'sselection.

It should be also noted that the embodiment specified in thisspecification and the configuration illustrated in the figures are justexamples of most desirable embodiments of this invention, and do notrepresent all the technical thoughts of this invention, so at the timeof the application, there can be various equivalents and variableexamples that can replace those.

1. A multifunctional safety helmet comprising of an outer cap and aninner cap inserted into the outer cap, wherein the inner cap includes afirst air passage formed forward and rearward across the upper surface,a cooling fan mounted on the center of the first air passage thattransfers the heat dissipated from the head upward up to the first airpassage, and an air circulation vent formed in the front of the firstair passage that guides some air toward the forehead to circulate it. 2.A multifunctional safety helmet according to claim 1, wherein the innercap further includes multiple secondary air passages formed leftward andrightward across the upper surface, open to the first air passage.
 3. Amultifunctional safety helmet according to claim 1, wherein the numberof cooling fans installed on the first air passage can be as many as oneor more, and a primary baffle is formed at the boundary of the coolingfan to halve air to guide it forward and rearward respectively throughthe first air passage.
 4. A multifunctional safety helmet according toclaim 1, wherein the inner cap further includes a circuit boardelectrically connected to the cooling fan, and the circuit board canfurther have a voltage controller to control the voltage to control thespeed of the cooling fan and a noise filter that can blockelectromagnetic waves.
 5. A multifunctional safety helmet according toclaim 4, wherein the circuit board further includes a battery cell and aswitch electrically connected to control the voltage of the voltagecontroller.
 6. A multifunctional safety helmet according to claim 1,wherein the first air passage further can include a secondary baffleplaced relatively lower than the height of the first air passage tocirculate some air by guiding it to the air circulation vent to exhaustsome air toward the front side through the first air passage and toguide some air toward the forehead.